[PATCH v3 0/4] implement vcpu preempted check

Pan Xinhui xinhui at linux.vnet.ibm.com
Fri Sep 30 14:00:12 AEST 2016



在 2016/9/29 18:10, Peter Zijlstra 写道:
> On Thu, Jul 21, 2016 at 07:45:10AM -0400, Pan Xinhui wrote:
>> change from v2:
>> 	no code change, fix typos, update some comments
>>
>> change from v1:
>> 	a simplier definition of default vcpu_is_preempted
>> 	skip mahcine type check on ppc, and add config. remove dedicated macro.
>> 	add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner.
>> 	add more comments
>> 	thanks boqun and Peter's suggestion.
>>
>> This patch set aims to fix lock holder preemption issues.
>
> So I really like the concept, but I would also really like to see
> support for more hypervisors included before we can move forward with
> this.
>
> Please consider s390 and (x86/arm) KVM. Once we have a few, more can
> follow later, but I think its important to not only have PPC support for
> this.
>
hi, Peter
	right, we need consider more arches.
I will try to work out a RFC patch on x86 anyway. There are already some discussions of the solution on x86 :)

thanks
xinhui



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